Need help with some scenarios i set up

Hello Make team, currently setting up two scenarios for my client which i have actually done all necessary connections but they arent bringing ou the desired result

The first is to build the scenario where we are checking the last order in Shopify. if the ordered item from that order causes out of stock of this item in the “Main Warehouse” then we need post info on “OOS” Slack channel. So we need to check all items in the order if any of them cause OOS and an additional node in this automation which will additionally check if the total quantity of the items after the order becomes negative and if yes then send to Slack the message: {item name}, {SKU}, now has negative total quantity. which you can see set up in the first screenshot sent but the result we are getting are messages of items still very much in stock when an order comes in

AND THE SECOND SCRNARIO
setup a make.com I wish to download files inventory files from Amazon and export them to my PC as CSV files, I do this manually, and I wish to automate this using make.com, I’ve watch a youtube video but I can get it to work. I just want someone to show me how make.com works, once I have a working example, if you could just show me what I need to do to create the automation from scratch then I can make my own going forwards. which i have setup as seen in the second screenshot and the result we have been getting whenever we run the scenario has been a blank CSV file

I would greatly appreciate if these can be looked into and solution preferred